Changing glass-feeder bushings



CHANGING GLASS FEEDER BUSHINGS Filed Ot. l2, 1925 ffii El INVCNTORPatented Sept. 20, 1927.

intatti nm'ransrarss ari-Nr reis.

:503W MURI'.- LENTS, OF EVANSVILLE, INDANA, ASSIGNOR T0 THE OWENS BOTTLECOMPANY, QF TCLEDO, OHIG, A CORPORATION 0F OHO.

CHANGING' GLASS-FEEDER BUSHNGS.

the outlet ortice is usuallyprovided with a removable ring or bushing,ordinarily made ot' refractory clay. Frequent removal o't auchbushings'and replacement by new bushings is required in practice, asthey wear rapidly, owing to the corroding and abrav sive action of theissuing glass and the severe temperature conditions to which they aresubjected. A usual method of controllin the Iglass when the removal of abush' ing is necessary, has been to move a plug downward through theglass into the outlet to check the flow land also reduce the temperatureot the glass until the ilow is stopped or reduced suiiiciently to permitremoval ot the bushing. The latter is then replacedfby a newv bushing,the plug withdraxvnand the glass reheated until. a. normal flow is againestablished. rlfhis method consumes consideralole time, particularly onaccount oi" the time required to reheat the glass to a workingtemperature.

An object of my invention is tol provide a novel and practical' methodand means for controllingthe glass in a feeder ot the character aboveindicated, permitting a quick` removal and replacement of the outletbush ing and quick reestablishment of the flow, while maintaining` theglass at its normal workingr temperature duringsuch operation.

More particularly; t'he invention com- 'prises means tor obstructing'the iiow ot glass at a point behind the /outlet by inserting' anobstruction 1n Lne noot or flow spout and thereby separating thevfeeding section of thespoutfrom the remainder of the spout, allowingthe glass lin front of the obstruction to quickly drain through theoutlet,a allowing the outlet bushing to be quickly removed and4 replacedby a new bushing, means also being provided for maintaining the glassbehind the obstruction at a working temperature, thereby avoiding thenecessity felt reheating the glass to establish a normal' @ther objectsof the invention will appear hereinafter.

Reference being had now. to the accompanying drawings forming a part ofthis specification:

Fig. l is a fragmentary sectional elevation of the forward end of a bootor container of a feeder, constructed in accordance with the principlesof my invention.

Fig. 2 is a plcn view, with parts broken away, of the heat-ing" chamber.v

Fig. 3 is an enlarged part sectional view of my device taken at the linelil-Ill of Fig, 2, and shows a tank in part section.

Fig. 4t is a fragmentary section of Fig. l, showing the packing glandusedin my preferred form of invention.

, Fig.v 5 isa fragmentary sectional. elevation ot the forward end of aboot or container further illustrating my preferred form ot' invention.Q

Referring to the drawings for a'descripltion in detail of theconstruction therein illustrated, a Yboot or container 5 made of anysuitable refractory material will bev seen, provided with a forwardportion having slightly converging walls 7. I A roof ele ment 6, alsoot' refractory material, is disposed overthe boot. Rising' up :trom thesaid root are vertical walls 8, l1 and 14 whic form the sides of aheating chamber above the roof` The vertical. walls 8 and'l are out awayon their inner sides to present small shelves 9, which support aremovable element l0 forming` a cover to the heatirna chamber. The rooi"ot the boot 6 4is formed at l2 with a transverse opening wherein aremovable block l3may be disposed. The root under the heating chamber is'further out away at l5 to provide an outlet passagew way for directingheating products over the glass in the receptacle adjoining the saidopening in the root at 12. The bottom flooringr of the'torward portionof the boot is formed with an outlet orifice 1T, said oritice surroundedon the outside with a bushing 18 of suitable refractory material, car'-ried in a metal ring 18a.

As `will best be seen from Figc 3, la water patch 19 consisting of ahollow metal block or *tank conformingto the shape or the hoot,

neeaeei is designed to loosely lit across the said boot in the openingmade by the removal of the bloclr 13 hereinbefore described. The Waterpatch'ltl" is preferably constructed o metal and has formed on its uppersurface, two openings and 2l. A vertical pipe 25 connected to an inletpipe 23 by an elbow 2t, extends through the opening 2O of the waterpatch to -iust short of the bottom of the latter and supplies coolingWater to said patch. A short length of pipe connected to an outlet pipe26 by an elbow 2da, enters the water patch through the opening; 21 ashortdistance. Where the said pipes and 3l enter the water patch throughthe openings` `20 and 21 respectively, paclrlngs 27 disposed Withinglands 22 and compressed by gland nuts 28, serve to malte a watertightconnection.

il handle 29 is securely 'fastened to a corner of the Water patch.Flexible hose 30 are coupled to pipes 23 and A burner nozzle 32 entersthe heating chamber through an aperture in the side vwall l1, andsupplies heat to the glass adjoining the heating chamber. will he notedYfrom an inspection. of Fig. 1, that the Wall 11i projects a littlebelow ther-ooit 6 and stops short ot the ordinary height ot the moltenglass in the container, thereby leaving a small channelway immediatelyover the glass for heating products to contact With the lgiglass beneaththe said vertical wall llt. lt is obvious that suitable mech anism maybe provided for the insertion, the rocking, and the ultimate removal ota loosely fitting water patch, thereby making the operation of my devicecompletely automatic.

Moule of operation.

lflfhen the bushingf 18 is found to be in need of renewal,`the block orclosure 13 (see Fig. 5) is removed. The Water patch 19 is inserted inthe opening through the rootl obtained by the removal of the said block13, and lowered down into the molten glass (see Figs. 1 and 3).

A. continuous circulation of fluid, prefer ably Water, is maintainedthrough the water patch by. the connections hereinbeiore described. T hemoltei'i glass coming in contact with the cool sides of the patch 19, isslightly chilled and thereby, to a certain extent, a ccngealed orstidened coating of glassv is termed around the said patch. The coating;35S (see Fig. 3) ot congealed glass around the sides oi the Water patch,presents a very eectual sealing means, permittin the glass in ront oivthe water patch to be' rained off through the. outlet 17. llt will heapparent that the above described Water patch .comL clelia segregatesthe iront4 portion ot-the container.

- to maintain the sealing medium atie state, l contemplate the pro-4said medium 33. The water patch 19 is continuously agitated during7 thewhole operation of changing the clay bushing. This agitation of thepatch may be caused either by manual or mechanical means. ln mypreferred form of invention, l have shown only manual means tor'accomplishing this purose.

p rlfhe heating chamber supplies heat to the glass adjoining;r theinserted water patch and the glass in the boot, and prevents the samefrom becoming chilled during the operation of changing the bushing.

After the patch is in place and the se re- ;ation of the container iscomplete, the g ass in the 'forward part of the boot or container isquickly drained, leaving that part of the boot free to be worked upon.The old bushing is removed, an application of clay Wash is applied, anda nevi7 bushing is secured under the discharge orifice. The latter isall y done with prompt dispatch. rlhe Water patch is then removed, andthe block replaced in its .seat in the root` G. lt has been found inpractice that the entire operation can easily he performed in a periodot tive minutes, more or less.

Modifications ot the above may he 'made l within the spirit and scope ofmy invention.

llVhat l claim is: 1. rlhe method of temporarily obstructin the A{lowofmolten glass through a ohanne or passageway at a predetermined point andpermitting the glass beyond said point to hel `zglass at said point,extracting heat from the glass between said obstruction and the walls ofthe channel suficiently to congeal the glass, agitation; the obstructingdevice to prevent it troni freezing to the channel walls, and Withdrawing the glass in the channel beyond the obstruction.

3. The method of temporarily arresting the movement of molten glassthrough a channel at a predetermined point and permittin'g the glassbeyond said point to Vbe removed, which consists in placing in the glassat said point an obstructingdevice ex tending across the channel,through said obstructing device sufficient heat trom the glass betweenthe obstructing device and channel Walls to partially congeal extractingltllll the glass, and maintaining a relative Imovement between the wallsof said obstructing device and the walls of the channel to preventfreezing ci the ,obstructing device to the channel walls.

4. The method of'temporarily arresting.

across the channel, maintaining a circula` tion of coolingl fluid withinthe obstructing device, and agitating the obstructing device to preventit from freezing to the channel walls.

5. The method of temporarily arresting the movement of molten glassthrough a channel at a predetermined point and permitting the glassbeyond said point t-o be removed, which consists in placing in the glassat said point an obstructing device eX- tending across the channel,extract-ing through said obstructing device sufficient heat from theglass between the obstructing device and channel walls to partiallycongeal the glass, maintaining a relative movement between the walls ofsaid obstructing device and the walls of the channel to prevent freezingof the obstructing device to the channel walls, and applying heat to theglass in the channel behind said obstructing device.

6. The combination of means providing a l across the channel and leavingnarrow spaces between the channel walls and the obstructing device, andmeans for moving the opl structing device back and forth transversely ofthe channel and thereby preventing it from freezing to the-channelwalls.`

7. The combination of means providing a channel through which moltenglass is caused to flow, an obstructing device projecting downward intothe glass and extending acrossthe channel and leaving narrow/f spacesbetween the channel walls -and the obstructing device, means forcirculating al cooling medium through said obstructing device, and meansfor vibrating the obstructing device and thereby preventing itfromfreezing to the channel walls.

- 8. The combination of means providing a channel or passageway throughwhich molten glass is caused to How, means for temporarily partitioningthe Cl anne] at a predetermined point and thereby arresting the movementof' glass back of said point while permitting the. withdrawal of glass1n front of said point, said partitioning means comprising a hollowmetal plate extending downward into the glass in the channel and vof awidth to provide narrow spaces between the channel walls and said plate,means for circulating a cooling fluid through said plate to partiallycongeal the surrounding glass, and means for causing a sustainedagitation of said plate throughout the period of time the glass isarrested and thereby preventing the plate from adhering to the channelwalls. 9. In glass feeding apparatus, the combination of a container formolten glass having an outlet opening in the bottom thereof throughwhich the glass is discharged,

means for temporarily damming the iglass at a point behind the outletand permittinY the glass in front of the dam to drain o through theout-let, said means comprising an obstructing plate projecting downwardinto the glass in the container and extending transversely of thecontainer, said plate being of somewhat less width than the ulteriorwidth of the container, leaving narrow passageways between the walls ofthe container and said plate, and means for causing a sustainedagitation of said plate throughout theperiod of time the glass is dammedand thereby preventing the plate from adheringf'to-the walls of theco-ntainerr 10. In glass feeding apparatus, the combination of acontainer for molten glass having an outlet opening -in the bottomthereof through which the glass is discharged, means for temporarilydamming the glass at a point behind the outlet and permitting the glassin front of the dam to drain otrn through the outlet, said meanscomprisingvan obstructing plate projecting downward into the glass inthe container and extending transversely of the container, said platebelng of somewhat less width than the interior width of the container,leaving narrow passageways between the walls ,of the container and saidplate, means for circulating a cooling medium through said plate, andymeans for causing a sustained agitation of said plate throughout. theperiod of time the glass is dammed and thereby :preventing said platefrom freezing to the walls of the container.

Signed at Evansville,iin thepcounty of Vanderburg and Stateof Indiana,this second dayl of October, 1925.

JOHN MURL LENTS.

